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New Zealand weather

Weather in Greymouth for September 2025

Your guide to Greymouth weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Greymouth has been nearly identical to the historical average, with a temperature of 10.5 °C (showing only a slight deviation of -0.3 °C).

  • The forecast for the upcoming days in Greymouth predicts a temperature of 12.3 °C, which is slightly above the historical average.

  • In general, the average temperature in Greymouth at the beginning of September is 11 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 11 °C by the end of September.

    • Rain 🌧️

  • Greymouth experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 401.6 mm.

Average dry days
2
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
11°/6°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Greymouth Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
11°
2
Moderate or heavy rain with thunder
11°
3
Light rain shower
11°
4
Light rain shower
11°
5
Light rain shower
13°
6
Patchy rain possible
10°
7
Light rain shower
10°
8
Patchy rain possible
11°
9
Moderate or heavy rain shower
11°
10
Moderate or heavy rain shower
10°
11
Patchy rain possible
10°
12
Moderate rain at times
11°
13
Moderate or heavy rain shower
10°
14
Patchy rain possible
11°
15
Patchy rain possible
12°
16
Moderate rain
15°
17
Heavy rain
14°
18
Moderate rain
11°
19
Patchy rain possible
11°
20
Patchy rain possible
13°
21
Moderate rain
14°
22
Patchy rain possible
14°
23
Moderate rain
14°
24
Patchy rain possible
13°
25
Moderate rain
11°
26
Moderate rain
10°
27
Moderate rain
9°
28
Patchy rain possible
11°
29
Patchy rain possible
11°
30
Partly cloudy
12°

Temperatures trend during September in Greymouth

See the weather trend as well as the moving average line

September weather in Greymouth day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 11° /5° 12.8 mm 4
2 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 11° /6° 9.2 mm 4
3 Sept. Light rain shower
Light rain shower
 11° /8° 3.2 mm 4
4 Sept. Light rain shower
Light rain shower
 11° /7° 9.9 mm 4
5 Sept. Light rain shower
Light rain shower
 13° /8° 27.5 mm 4
6 Sept. Patchy rain possible
Patchy rain possible
 10° /5° 6.3 mm 4
7 Sept. Light rain shower
Light rain shower
 10° /5° 6.3 mm 4
8 Sept. Patchy rain possible
Patchy rain possible
 11° /3° 0.4 mm 4
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 11° /8° 26.9 mm 4
10 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /6° 17 mm 4
11 Sept. Patchy rain possible
Patchy rain possible
 10° /3° 1 mm 4
12 Sept. Moderate rain at times
Moderate rain at times
 11° /5° 2.1 mm 4
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /8° 49.4 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 3.4 mm 0.4
15 Sept. Patchy rain possible
Patchy rain possible
 12° /9° 4.7 mm 0.7
16 Sept. Moderate rain
Moderate rain
 15° /12° 6.6 mm 0.7
17 Sept. Heavy rain
Heavy rain
 14° /11° 20.8 mm 0.2
18 Sept. Moderate rain
Moderate rain
 11° /10° 16.9 mm 0
19 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 1 mm 3
20 Sept. Patchy rain possible
Patchy rain possible
 13° /7° 1.2 mm 3
21 Sept. Moderate rain
Moderate rain
 14° /12° 10.8 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 14° /11° 4.8 mm 4
23 Sept. Moderate rain
Moderate rain
 14° /12° 9.1 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 3.3 mm 4
25 Sept. Moderate rain
Moderate rain
 11° /8° 5.6 mm 3
26 Sept. Moderate rain
Moderate rain
 10° /7° 10.9 mm 3
27 Sept. Moderate rain
Moderate rain
 9° /7° 5.9 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 11° /5° 1.2 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 11° /7° 1.6 mm 4
30 Sept. Partly cloudy
Partly cloudy
 12° /5° 0 mm 5
Next
Important Notice
Our weather forecast for Greymouth in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Greymouth forecast closer to your planned date for the most up-to-date weather information.
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Greymouth in September - FAQ

What are the expected maximum and minimum temperatures in Greymouth during September?
During September, expect a variety of temperatures with highs around 11° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Greymouth during September?
Significant rainfall exceeding 401.6 mm is expected in Greymouth during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Greymouth during September?
The average wind speed in Greymouth during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Greymouth

Explore the daily rainfall trends and prepare for Greymouths September weather 💧

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Get accurate weather forecasts for Greymouth, located at latitude -42.467 and longitude 171.2. Stay updated with localized weather information tailored for Greymouth.

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